Measuring-pump.



A. A. BOWSER.

MEASURING PUMP.

APPLIGATION FILED APR. 29. 1907.

Patented Feb. 24, 1914.

5 SHEETS-SHEET l.

@ff/ eI/ar A. A. BOWSER.

' MPASURING PUMP.

APELIOATIOLY FILED APB..29, 1907.

' 1,088,201. Patented 111611.24, 1914 5 SHEETS-SHEET z. 7

A. A. BOWSER.

MEASURING PUMP.

APPLICATION HLED 11211.29, 1907.

Patented 11612119111 6 SHBBTS-BHEET 3.

A. A. BOWSBR.

MEASURING PUMP.

APPLIUATION FILED A1129, 1907..

A. A. BOWSER.

MBASURING PUMP.

' APPLICATION FILED APR. 29, 1907. 1,088,201.. Patented 151919.24, 1914.

5 SHEETS-SHEET 5.

'@Zesees/ M70 -UNITED sT-ATEs PATENT oEEIoE.

ALLEN A. BOWSER, 0F FORT WAYNE, INDIANA, ASSIGNOR TO S. F. BOWSER &

COMPANY, INCORPORATED, OF FORT WAYNE, INDIANA, A CORPORATION 0F INDIANA.

To all whom t may concern.

Be it known that I, ALLEN A. BowsE-R, av citizen of the 4United States, residing at Fort Wayne, in the county of- Allen and State of" Indiana, have invented certain new and useful" Improvements in Measuring- Pumps, of which the following is a specification.

This invention relates to improvements in measuring pumps, and more particularly though not necessarily to the type of purilp ldescribed in the application of H.

Bowser and Allen A. Bowser, filed in the UnitedStates Patent Oiice on or about February 13, 1907, Serial No.' 357,125, and which includes an improvedv indicatoror dial, adapted to be set so that the pump will discharge a predetermined amount of liquid, and when the desired quantity has been discharged, the pump will be auto-,

matically checked or stopped; and the primary object of the invention is to provide improved` means for returning or automatically resetting the dial to discharge or pump the same quantity after the iirst quantity has been pumped.

A further object is to provide improved means for limiting or checking the operative movement of the dial.

A further object is to provide an improved form of adjustable stop for the dial.

A further object is to provide an improved device of this character which will 'be simple, cheap and durable in construction, and effective and eicient in operation.

To the attainment ofv theseends and theaccomplishment of other new and useful objects, as will appear, the invention consists in the features of novelty, in the construction, combination and arrangement of the several parts hereafter more fully d'escribed and claimed, and shown in the accompanying drawings illustrating an eXem .'plif'cation of the invention, and 1n which Figure 1 is a detail front elevation, partly broken away, of an improved apparatus of this class constructed in accordance 4with the principles of this invention. Fig. 2 is a longitudinal `'sectional view of Fig. 1. Fig. 3 is a detail. sectional view on line 3--3 of Fig. 4. Fig. 4 is a front elevation of Fig. 3., Fig. 5 is a detail sectional view on 11. Fig, 6 is a detail view line 5-.5 of Fi the dial' and the operating Specification of Letters Patent.

MEASURING-PUMP.

Patented Feb. 24, 1914.

Application led April 29', 1907. Serial N 0. 370,996.

the dial, showing the manner of securing the operating handle to the dial. Fig. 8 is a detail perspective view of the latch or dog .for locking the pump operating mechanism 1n operative position, and the arm or stop for tripping the latch or dog.- Fig. '9 is a` tion. Fig. 12 is a top plan view of Fig. l1. l

Fig. 13 is a View of the adjustable stop for the dial. Fig. 14 is a vertical-sectional view of a portion of the structure showing the piston operating mechanism. F ig. 15 is a vie-w of a detail.

Referring more particularly to thedrawings, the same reference numerals designate similar parts throughout the views, and in this exempliication of the invention, the numeral 15k designates a suitable supporting base, upon which is vmounted spaced walls lf3-17, forming a segment casing, and pivotally mounted within this casing is a suitable toothed member 18, the "teeth of which engage asuitable rack 19 which .is operatively connected with the piston 19 of theipump, so that when the member 18 is osc-illated about its point of pivotal support the piston operating rack 19 will be reciprocated.

Motion is transmitted to the member 18 preferably by means of the gear 20, which is journaled to a suitable gear-casing 21, which-latter is supported by the front face of the wall 16 of the segment casing. A

Asuitable operativev connection is .arranged between the gear 20 and the member 18,V

and preferably comprises a crank pin 20a on the gear 20, which pin enters a caring member 18aL and which latter is adapted to slide in a slot 18b in the segment 18.

Motion is transmitted to the gear 20 preflerably by means of pulleys 22 mounted upon. l a shaft 23, which extends through the segment casing; and secured for rotation with the shaft 23 is a pinion 24 which meshes with the gear 20, so that when motion is transmitted to the shaft 23, the gear 2O will be rotated by thepinion 24.. s

vA suitable clutch' mechanlsm 25 is arranged t0" QOltrol the rotation of the gear 20, and an operating member 26," which is` normally held in position by means of a suitable yielding member, such as a spring ends, as at 29, and passes through the walls of the segment casing, one end of which is operatively connected to the clutch operating member 26, through the medium of the connection 30. The other end of the lever 28 is secured to a rod 31. This rod is extended upwardly in front of the gear casing 21, and the extremity 32 thereof is preferably bent or deflected, and said extremity is adapted to engage the free end 33 of the latch or dog 34, which is pivotally supported preferably by the front of the gear casing 21.

Any suitable means may be provided for raising the rod 31, so that the extremity 32 `thereof will be brought into engagement with the dog 34. A suitable and eflicient means for accomplishing this purpose comprises an operating lever 35, which is pivotally supported, as at 36, intermediate its ends, and preferably by the front of the gear casing 21.. The free extremity 37 of this lever stands adjacent, and is adapted to engage the deflected or bent end 32 of the rod 31, and when the handle of the lever 35 is moved so as to elevate the extremity 37, the deflected end 32 of the bar 31 will be raised against the tension of the yielding member 27, and into a position to be engaged by the end 33 of the dog 34. This dog 34 being of the gravity "type, will assume a po'- sition to permit the deflected end 32 to pass the end 33 on the upward movement of the rod 31, and after said end has passed the end 33 of the dog, the latter will assume its normal position, so that when the lever 35 is released the end 32 will rest upon the end 33 of the dog. This adjustment of the rod 31 will move the clutch-operating member 26 out of operative position and permit the pulleys 22 to become locked to the shaft 23, so that the motion will be transmitted to the member 18 to operate the pump iston.

All of these parts however form the subject-matter of the application, Serial Number 357,125, above referred to.

An indicator dial 38 is rotatively mounted upon and spaced from the face of the casing 21, preferably by means of an axle 39. This indicator 38 is preferably provided with an operating handle 40 having a reduced portion 41, which is adapted to enter a suitable aperture in the indicator, terminating flush with the rear face thereof. The reduced portion 41 extends into the indicator from the front face thereof, and suit-able screws or bolts 42 are seated in the rear face of the indicator in a position so that a portion of the edge thereof will-extend over and engage the exposed face of the reduced por. tion 41. And. said screws 42 serve as a means for preventing accidental displacement of the operating handle 40.

1f desired, the periphery of this operating handle 40 may be milled or knurled for the purpose/of permitting the easy opera tion of the dial. A flexible member, such as a coiled spring 43, or the like, is arranged around the axle 39, preferably between the face of the gear casing 21 and the rear face of the indicator 38. One extremity of the spring 43 is secured to the gear casing 21, and the other extremity is secured to the indicator 38, so that when the latter is rotated by means of 'the handle 40 a tension will be created upon said spring or member 43, which tends to return the indicator to its normal or initial position when the operating handle 40 is released.

The indicator is preferably provided with peripheral gear teeth, and is 0f such a dia-me-` ter that when the indicator is in position and the cover or casing 45 is in place thereon, which latter is provided with a suitable aperture 45a therein to expose the face of the indicator, the gear teeth 44 will assume a position behind, and be covered or protected by, the cover 45. Suitable apertures 46 are arranged in the indicator 38, preferably adjacent the periphery thereof, and coperating with said aperture 46 are a series of graduations 47 which are arranged on the face of the indicator dial in such a manner as to progress successivelyaround the dial from a zero point.

Projecting from and movably supported by the face of the gear casing 21 is a stop 48, shown more clearly in Fig. 13, which is adapted to be engaged and moved by a laterally projecting stop lug 49 arranged on the rear face of the indicator 38, and said stop 49 is adapted to engage and move the stop 48 when the indicator 38 is moving in a clock-wise direction to permit the latter to assume a zero position as shown in Fig. 11, and to be engaged and moved by the stop 49 when the indicator is moving in an anti-clockwise direction, to permit the latter t-o assume a posit-ion as shown in Fig. 9 to pump 100 gallons, that is, so that the character indicatin one hundred gallons will assume a position under the end 51 of the indicator 50. The stop 48 is provided with laterally projecting extremities, each of which is provided with a slot 48 to permit the movement of the stop, the latter being held or supported by means of fastening devices 48b which pass loosely through the slots 48a and engage t-he casing 21.

Pivotally supported, and preferably by the front of the cover 45 is a pointer 50, one extremity 51 of which projects over the face of the indicator 38, and is adapted to coperate With the graduations 47 thereon. The i59, the teeth 59c Will engage the teeth 44 to other extremity 52 projects beyond its pivot point 53, and is adapted to engage a stop 54, which latter is also preferably arranged on the face of the casing or cover 45. The stop 54 permits the pointer 50 to move about its point of pivotal support in one direction, and prevents it from movingy about said point in the'opposite direction, for a purpose to be hereafter more fully set forth.

The upper extremity 55 vof the dog 34 is adapted to project beyond the periphery of the indicator 38, and secured to the rear face of the latter in such a. position as to. engage the point or extremity 55 to trip said dog 34, is an arm or projection 56.

The front of the gear casing 21 is preferably provided With an elongated slot 57, extending therethrough, shown more clearly in Figs. 9 and 11, and located preferably adjacent the indicator 38. Movably mounted in this slot 57 is a suitable member 58, to Which is pivotally supported by one end a paWl 59, the extremity 60 of which is adapted to engage and rest upon the peripheral teeth 44 of the indicator 38. Then said paWl 59 is reciprocated through the medium of the mem ber 58, the extremity 6() thereof will successively engage the peripheral teeth 44 of the indicator 38 to impart an intermittent movement to the indicator. Reciprocating movement is imparted to the member I58 through y the medium of two cam-shaped projections (S1- 62, which extend beyond and are secured to the face of the gear 20. Said camshaped projections are adapted to successively engage a laterally projecting pin 63 on the member 58,.shoWn more clearly in Figs. 2, 9 and 11, to respectively raise and lower the said member 58, as the gear 20 is operated.

The paWl 59 is preferably of the gravity type, and any suitable means may be provided forraising the extremit-y 60 thereof out of engagement With the peripheral teeth 44 of the indicator 38. A suitable and etticient means comprises a projecting lug 64,

which passes through a suitable aperture 65,

in the cover 45, and Said lug G4 is preferably provided With an enlarged head 66, by means` of which the operator may move the paWl 59 about its pivot to raise the extremity 60 of the pawl out of engagement with the teeth 44. The head 66 is preferably of a size to normally close the aperture 65 in the cover 45. The periphery of the indicator `38 is provided with a fiattened portion 44b for a purpose to be .set forth.

A retaining pawl 59 is pivoted by oneend to thecasing 21, and the free extremity 59b thereof is preferably provided with a plurality of spaced teeth 59c adapted to engage and rest upon the peripheral teeth 44 of the indicator dial 38 so that when the latter is advanced one step'of rotation by the pawl prevent retrograde movement of the dial.

A suitable sto-p 60a may be provided for limiting the movement of the pavvl 59a mvhich latter is preferably arranged 'in2 close proximity to the free end of the paWl 59 so that when the paWl 59 is released or raised by the stud 64 the free extremity of the pawl Willengage and simultaneously raise.tlie paivl 59a to release the dial 38. The paWl 59 is also arranged in such a position With relation to the pawl 59 that the operation of the latter through the medium of the pin 63 and the cam 61, Will not affect or move the former.

The dog 34 is adapted tobe tripped to stop the pump at any desired time, preferably by means of a'n operating bar 67, one end of Which is pivotally connected to the latch or dog 34, and the other end is provided With an operating handle 68.

Briefly stated the operation of the above described parts, is as follows: Assuming the parts to be in position as shown in Fig; 1, the pump is in an inoperative position with the indicator at the Zero point; that is, with the zero character indicating the normal position of the dial under the extremity 51 of the indicator point 50, as shown more clearly in Figs. 4 and 11 of the drawings. The operator first sets the dial to the quantity desired to be discharged by the pump, by rotating the indicator dial to the-rightor in a clockwise direction by means of the handle 4() until the figure designating the desired quantity appears under the extremity 51 of the pointer 50, 'the end 60 of the pawl 59 riding over the teeth 44. After the dial has thus been set, the ro-d 31 may be raised in the manner already described, until its extremity or deflected end 32 is engaged by the end 33 of the dog 34 to be` come locked. The raising of this rod per` mits such action of the clutch members 25 as to lock the driving pulley 22 to the shaft 23, so that motion Will be transmitted to the shaft 23. The reciprocation of the paWl 59 will intermittently move the dial to the right andthe teeth 44 are so disposed that the characters appearing under the extremity 51 during the' operation of the pump Will decrease, that is, assuming anyone of the numbers to be under the' end 51 and the indicator is moved one notch, the next figure tion, the projection 56' Will engage the extremity 55 of the dog 34 to trip the latter, permitting the rod 31 to return to its normal position under the influence of the flexible member 27 to release the clutch members 25. Any suitable means may be provided for preventing the indicator from passing bevond the set point when returned by the spring 43. A suitable and eliicient means for accomplishing this purpose, and to which this invention is more particularly directed, comprises an arm 69 which is pivotally supported by one extremity, preferablyby means of a suitable aperture 70 through the extremity, and into which aperture projects a suitable shouldered portion 71 of the operating handle 40 of the indicator. This arm is mounted tor free movement about the shouldered portion 71 and over the face of the indicator 38. The free extremity thereof is preferably spaced from the indicator and terminates adjacent its periphery in a casing 752 which is preferably provided with a slot 73 in the side thereof, and which opens through one end. Projecting from one side of the slot 73 toward the other side thereof, and remote from the extremities of the slot, is a projection 74 forming a suitable recess 75. A pin 76 projects through the casing 7 2, and is provided with an operating handle 77. This pin 76 is of a length to project entirely through the casing 7 2, so that the extremity 7 8 thereof Will enter and be seated in any one of the apertures 46 of the indicator 3S. A. suitable yielding member 79 is preferably located ivithin the casing TQ. so that one end thereot' will engage the top of the casing, and the other end will engage a laterally projecting stud SO on the pin 76. Said yielding member 79 tends to normally hold the free extremity 7S ot the pin 76 Within one ct the apertures. Then the extremity TS is seated in one of the apertures 46, the pin 76 may be axially rotated, so that. the stud S uill pass under the projection 74 to lock the pin against accidental displacemeut, and to cause the arm 69 to rotate with the indicator 3S. Then the pin 76 is withdrawn, so that the extremity 7 S thereot` will be unscated, it may be locked in its withdrawn position by axially rotating the same, so that the stud 80 will enter the recess 75 above the projection 74. and in such position that the arm 69 may be freely rotated about its point of-pivotal support into a position that the extremity 7S of the pin.l when the latter is released, will enter one of the desired apertures 46 adjacent the character designating the specific quantity desired to be discharged by the pump.

Assuming the parts to be in the position as shoivn more clearly in 3, 4 and ll ol. the drawings, and that it is desired to set the dial to discharge a speciic quantity (for example, ive will say tive gallons) the operation is as follows: The pin 78 being locked out of operative position, as shown more clearly in Fig. 3, the arm 69 is free to be moved in any desired direction. The operator may then turn the arm 69 until the pin 76 is opposite the aperture adjacent the numeral as shown in Fig. 1 of the drawings. In this position, the pin 76 is rotated in its bearing to unlock the same, and the yielding member 79 Will seat the extremity 7 8 thereof in the aperture adjacent the numeral 5. The indicator may then be rotated to the right or in a clockwise direction by means of the handle until the numeral 5 assumes the Zero position or the position occupied. by the zero point, which operation tends to Wind up or increase the tension of the spring 43. This rotation ot the indicator will not be interrupted by the stops 48, 49, as the stop 49 which is carried by the indicator Will be'moved away from the stop 48. When the indicator is in this position, the portion of the pin 76 which is adjacent the face or" the indicator, will rest against the extremity 5l of the pointer or index 50. lVhen thus adjusted, the operating mechanism may be set into operation as in the manner already described, that is, by actuating the lever 35. The indicator is then intermittently rotated in a clockwise direction by means of the paWl 59, and the operating mechanism and the pump element will remain in operation until the zero pointV appears beneath the extremity 5l of the indicator pointer 50, at Whichpoint the dog 39 Will be tripped in the manner already described, so that the pump element will not be operated. When the pump operating mechanism is tripped, it Will be noted that the pin 76 has moved to a position 5 points beyond the indicator pointer 50. In order to reset the indicator so that the pump will discharge a similar quantity with the next operation of the pump, all that it is necessary is to raise the pawls 59, 59a out of engagement with the peripheral teeth 44 in the manner as already set forth. The normal tendency of the spring 43 is to return the indicator to the zero position, and during the advancement of the indicator, While discharging the first desired quantity, the tension of the spring 43 will be increased, and when the indicator is released, it will be noted that the spring 43 will have a tendency to turn the indicator in the opposite direction, and this return movement is checked by means of the pin 76 which engages the extremity 51 of the indicator 50; that is, the pin 76 cooperating with the extremity 5l of the indicator 50 will act as a stop for the `return movement ot the indicator. Thus it will be seen with this construction, improved means are provided Jfor automatically setting or returning the indicator to the position to which it was .set for thefinitial discharge ofY the pump,

- setting operation for the subsequent quantities will be automatic.

Should it so happen that the quantities to be discharged will necessitate the setting of the pin to aposition to the left-,hand side of the pivot point of the indicator or pointer 51, such for. instance, as 95 gallons, the pin 7 6 maybe released in the manner already set forth, and instead of-rotating the arm 69, completely about the face of the indicator, it may be moved to the left sothat the pin 7 6 will clear the extremity 51 of the indicator or pointer and pass to the' other side of. the point'of pivotal support 58, after which the indicator or pointer will assume its normal position as will be understood. Thepawls 59 59 may also be raised by the handle `66 vto permit the indicator to be rotated to the left or iii an anticlockwise direct-ion by the handle 40 to position the indicator. Thus it will be seen that the varm 69 ma be adjusted to any desired position regar less of its position with respect t`o the indicator or pointer 51, and that hav-v ing been once adjusted, the indicator or pointer will act as a stop by means of which the indicator may be automatically set for subsequent quantities after having een once set for the initial quantities.

Again assuming the indicator ,38 to be in the position shown in Figs. 4 and 11, and

it is desired to discharge 95 gallons, all that it is necessary is to set the in 76 in the openin in the indicator adjacent the 95 gallon indication, and then rotate the indicator in a clockwise direction until the pin '7 6 passes the indicator or pointer 51 which rotation will create a further tension on the spring 43 so that'when the indicator is released, the tension of the sprin will move the' indicator in an anti-clockwise direction to cause the pin 76 to engage the indicator or pointer 51 and hold the indicator in its adjusted positions to indicate 95 gallons. The indicator is then intermittentl operated in a clockwise direction as be ore described, which moves the 95 raduation away from the indicator or pointer in a clockwise direction, which will 'still further increase the tension of the spring`43.

\ When now the zero 'graduation of the indicator assumes a -position under the indicator or pointer 51, the projection 56 will rock the dog 34 andthrow the operating mechanism out `of operation.

or handle 40 after the knob or button 66 is 4 Obviously, the indicator may be rotated anti-clockwise.

shifted to render the pawls 59, 59a inactive with respect to the toothed periphery of the indicator 38 as indicated in dotted lines in Fig. 9.

When it is desired to discharge the full capacity, that is, the largest quantity possible, which in the present exempliication of the invention is 100 gallons, it is not necessary to employ the pin 76 and the latter is first locked in an inoperative position. The indicator is then released, and when thus released, the tension of the spring 43 will move the indicator to the left or anti-clockwise, which will cause the projec` tion 49 on the indicator to engage the stop 48 on `the opposite side and move the latter to the left, and said stop will move a sutlicient distance to check the movement of the indicator when the 100 graduation mark appears below the end of the indicator or pointer 50. When the' indicator is set in this position, the extremity 60 of the pawl 59 will engage the tooth 44 just behind the flattened' 'portion 44a, and, the extremities 59 of the pawl 59a, will engage the teeth 44 on the other side of the spacev 44b so that the first movement of the pawl 59 will move the -indicator one step of rotation (see Fig. 9). The extremities 59 of the pawl 59u are so spaced that they will completely fill the space adjacent the flattened portion 44b as it comes adjacent the extremities, so as to' insure a positive and regular motion to kthe indicator; one ofl the extremities engaging the tooth on the farther flat portion, and the said other extremity will engage the tooth on the other side of the space While the first extremity is adjacent the flattened portion,

When the indicator reaches the zero position or the position shown in Fig. 11, the extremity 60 of the pawl 59 will engage the flattened portion 441 to prevent further rotation of the indicator. During the rotation to the zero position, the stop 49 will engage the stop 48 on the other side, as shown in Fig. 12 to move the lat-ter stop to permit the indicator to assume a proper Position. When released, the spring 43will return the ndicator to the position to pump 100 galons.

In order that the invention mi ht be v fully understood by those skilled in t e art,

the details of the foregoing embodiment -scribe'd, but

What I claim as new and desire to secure byv Letters Patent is 1. Inv an indicator pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position and in the plane of its adjustment, means operatively related to the side of the space to hold the indicator, While the other extremity is adjacent the thereof have been thus ,specifically defor self measuring -adjustment, mechanism for rendering the 'first said means inactive, means :t'or returnindicator for rendering the said mechanism inactive, and means for returning the indicator to its adjusted position.

2. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position and in the plane of its adjustment, means-for rendering the said mechanism inactive, and means for automatically returning the indicator to its adjusted position.

3. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for imparting a step by step movement to the indicator tobmove the latter from its adjusted position and in the plane of its adjustment, means for rendering the operating mechanism inactive, and means for automatically returning the indicator to its original adjusted position.

4. In an indicator for self-measuring pumps, means for adjusting t-he indicator, mechanism for imparting a. step by Astep movement to the indicator to move the latter from its adjusted position and in the plane of its adjustment, means operatively related to the indicator for automatically rendering the said operating mechanism inactive, and means for automatically returning the indicator to its original adjusted position.

5. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted posit-ion and in the plane of its ing the indicator to its original adjusted position, and means for limiting the last said movement of the indicator.

6. In an indicator for self-measuring pumps, means for adjusting t-he indicator, mechanism for moving the indicator from its adjusted position and in the plane of its adjust-ment, means for rendering the said operating mechanism inactive, means for returning the indicator to its original adjusted position, and a stop for limiting the last said movement of the indicator.

7. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position and in the plane of its adjustment, means for rendering the said operating mechanism inactive, means for returning the indicator to its original adjusted position, andan adjust-able stop on the indicator for limiting the last said movement of the indicator.

8. In an indicator for self-measuring pumps, means for adjusting the"indicator, mechanism for moving the indicator from its adjusted position and in the plane of its adjustment, means for rendering the said operating mechanism inactive, means for returning the indicator to its riginal adjusted position, a stop operatively related to the indicator, and an index cooperating With the indicator, said stop being adapted to engage the index to limit the last said movement of the indicato-r.

9. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position and in the plane of its adjustment, an index coperating with the indicator, means forrendering the said operating mechanism inactive, means for returning the indicator to its original adjusted position, and a stop adjustably secured to the indicator and adapted to engage the index to limit the last said movement of the indicator.

l0. In` an indicator for self-measuring pumps, means for adjusting the indicator,

mechanism for intermittently moving the indicator from its adjusted position and in the plane of its adjustment, means for rendering the said mechanism inactive, an index coperating with the indicator, means for automatically returning the indicator to its original adjusted position, a stop adjustable with relation to the indicator, and means for securing the stop to the indicator, said stop being adapted to engage the index to limit the last said movement of the indicator.

1l. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator, mechanism for moving the indicator from its adjusted position, an index cooperating with the indicator, means for releasing the operating mechanism, means for returningl the indicator to the original adjusted position, a stop adjustable with relation to the indicator, and means for securing the stop in its adjusted position, said stop being adapted to cooperate with the index to limit lthe return movement of the indicator, and said stop being also adapted to permit free moven'ient of the stop in the opposite direction.

l2. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position, a yielding index cooperatin with the indicator, means for releasing t ie operating mechanism, means for returning the indicator to its orignal adjusted position, a stop adjustable with relation to the indicator', means for securing the stop to the indicator in its respective .adjusted position, said index being adapted to permit the `free movement of the indicator 1n one direction; and means whereby the index Will limit the movement of the indicator in the opposite direction when engaged by the stop.

13. In an indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position and in the plane of its dicator to its original adjusted position, and

means adapted to be engaged by the stop to limit the last said movement of the indicator. j v I 14. In a rotatable indicator for self-measuring pumps, means for adjusting the indicator, mechanism for moving the indicatorl from its adjusted position, a stop mounted *for movement independent bf the indicator, means operatively related to the stop for securing the latter to rotate With the indicator, a yielding index cooperating With the indicator, said index being adapted to per- Vmit a -freemovement of the stop in -onev direction and to limit the movement thereof in the opposite direction, and means for automatically returning the indicator to its original adjusted position.

. 15. In an indicator for selfmeasuring pumps provided'with a plurality of apertures, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position and ain the plane of its adjustment, a stop mounted for movement independent of the indicator, a member adjustably supported by the stop, the extremity of said member being adapted to enter one of the apertures to secure the stop for rotation with the indicator, means for returning the indicator to its original adjusted position, and means coperating with the stop to. limit the last said movement of the indicator.

16. In an indicator for self-measuring pumps, provided With a 'plurality of apertures, means for adjusting the indicator, mechanism for moving the indicator from its adjusted position, a stop mounted for movement independent of the indicator, a member adjustably supported by the stop, the extremity of said member being adapted to enter one of the apertures, to secure the stop for rotation with the indicator, means for locking the member in engagement Withtlie indicator, means for returning the indicator to its original adjusted position, and

means ooperating with the stop to limit the last said movement of the indicator.

17. In an indicator for self-measuring pumps provided with a plurality of apertures, means for adjustingl the indicator, mechanism for moving the indicator from YA.- its adjusted position, a member mounted for 60 movement independent of the indicator, a pin adjustably'supported by the member,

means for holding the pin out of engagement with the indicator, one extremity of the pin being adapted to enter one of the apertures to secure thev member for rotation with the indicator, means for locking the pin in engagement with the indicator, means for returning the indicator to its original adjust- .ed position, and means coperating with the member to limit the last said movement of the indicator.

.18. In an Aindi-cator for self-measuring pumps provided With a plurality of apertures, means for adjusting the indicator, mechanism for imparting a step by step movement to the indicator to move the same from its adjusted position, a member mounted for movement independent of the indicator, a spring-controlled pin adjustably supported by the member, means for locking the pin out of engagement Withthe indicator, one extremity of the pin being adapted i to enter one of the apertures to secure the member forD rotation With the indicator, means for locking thepin in engagement With the indicator, means for releasing the indicator, means for returning the indicator to its original adjusted position When released, and means coperat-ing With thesaid member for limiting the last said movement of the indicator.

19. In an indicator forself-measuring pumps adapted to normally assume a zero position, means for adjusting the indicator from said position, mechanism for moving the indicator from its adjusted position toward the zero position and in the plane of its adjustment, means for preventing the movement of the indicator beyond the said zero posit-ion, means for causing the indicator to assume a zero position, said means also serving to retu'rn the indicator to, its original adjusted position, and means for limiting the last said movement of the indicator. f

20. In a rotatable indicator for selfmeasuring pumps, a yielding member normally tending to cause the indicator to assume a zero position, means for adjusting the indicator, means for moving the indicator Y 1&0 from its adjusted .toward the z ero position against the tension of the yielding member and in the plane of its adjustment, means forv releasing the indicator whereby the yielding member will return the indicator ,e to its original adjusted position, and means for limiting the last said movement of the indicator.

21. In a rotatable indicator for self-measuring pumps, a yielding member normally7 .-120 tending to cause the indicator to assume a zero position, means for preventing the passage of the indicator beyond said Zeroposition, means for adjusting the indicator, means for moving the indicator from its adjusted toward the zero position against the tension of the yielding member and in the plane of it-s adjustment, means fora-eleasing the indicator whereby the yielding member Will return the indicator to its 13k original adjusted position, and means for limiting the last said movement of the indicator. D

22. In a rotatable indicator for self-measuring pumps, a yielding member normally tending to cause the indicato-r to assume a zero position, means for adjusting the indicator, means for moving the indicator from its adjusted to its Zero position against the tension of the'yielding means, means for retaining the same in the last said position, means for releasing the indicator whereby the yielding member Will return the indicator to its original adjusted position, and separate means for limiting both of the movements of the indicator.

23. A rotatable indicator for self-measuring pumps, provided with indicating characters thereon, means tending normally to maintain-the indicator in a zero position, means for adjusting the indicator to a predetermined position,` means for maintaining the indicator in its adjusted position, means for moving the'indicator from its adjusted to its zeroposition against the tension of the first said means, means for preventing the movement of the indicator beyond the zero position, and means for releasing the indicator to permit the first said means to return the indicator to its original adjusted position.

24. A rotatable indicator for self-measuring pumps, provided With indicating characters thereon, means tending normally to maintain the indicator in a zero position, means for adjusting the indicator to a predetermined position, means 'for maintaining the indicator in its adjusted position, means for intermittently moving the indicator from its adjusted to its Zero position against the tension of the lirst said means, means for preventing the movement'of the indicator beyond the zero position, and means for releasing the indicator to permit the irst said means to return the indicator to its original adjusted position.

25. In combination, a pump element, a support therefor, a rotary indicator mounted thereon, inter-engaging means on said indicator and support adapted to limit the movement of the indicator in both directions, one of said means being yielding with relation to its respective support, and means for moving the indicator in both directions.

26.l In combination, a pump element, a support therefor, a rot'ary indicator mounted thereon, inter-engaging means on said indicator and support adapted to limit the movement of the indicator in both directions, one of said means being yielding With relation to its respective support, positive means for moving the indicator in one direction and out of operative position, and means for automatically moving the indicator in the opposite direction and into an operative position. y

27. In combination, a pump element, a support therefor, a rotary indicator provided With characters progressing successively from Zero, a projection on the indicator, a movable stop on the suppmt, means for causing the indicator to normally assume a zero position, said projection being adapted to engage and move the stop topermit the indicator to assume said Zero position, said indicator being adapted to be adjusted from its Zero position to cause the projection to engage and move the stop in the opposite direction to permit the indicator to assume a predetermined position, means for retaining the indicator in its ad justed position, means for returning the dial from its adjusted to its Zero position, and means for returning the dial to its original adjusted nosition.

28. In com ination, av pump' element, a support therefor, a rotary indicator provided With characters progressing successively from Zero, a projection on the indicator, a movable stop on the support, means for causing the indicator to normally assume a zero position, said projection being adapted to engage and'move the stop to permit the indicator to assume said zero position, said indicator being adapted to be adjusted from its zero position to cause the projection to engage 'and move the stop in the opposite direction to permit the indicator to assume a predetermined position, means for retain ing the indicator in its adjusted position, means for intermittently returning the dial from its adjusted to its zero position, and means for returning the dial to its original adjusted position. j

29. In combination, a pump element, a support therefor, a rotary indicator provided with characters progressing successively from zero, a projection on the indi'- cator, a movable stop on the support, means for causing the indicator to normally assume a zero position, said projection being adapted to engage and move the stop to permit the indicator'to assumev said zero position, said indicator 'being adapted to be adjusted from its zero position to cause the projection to engage and move the stop in the opposite direction to permit the indicator to assume a predetermined position, positive means for moving the indicator from said adjusted position to the zero position, means tor retaining the indicator in the last said position, means for releasing the indicator', and means for automatically retaining the indicator to its adjusted position when released.

30. The combination of an indicator elnbodying cooperating elements capable of relative adjustment, fastening means for fastening the elements together for simultaneous movement and for unfastening them, mo-

tion imparting means for moving the indicator from its adjusted position and embodying clutch mechanism, and means connected with one of the said elements for controlling the clutch mechanism whereby lthe'movement of the indicator by the motion imparting means Willrender the clutch inactive to disconnect the motion imparting means and the indicator.

32. The combination of an indicator embodying coperating elements capable of relative adjustment, fastening means for fastening the elements together ifor simultaneous movement` and for unfastening them, and

motion imparting means connected with one of the said elements for moving the indicator from its adjusted'position, said motion imparting means embodying clutch mechanism, there being a projection connected to and movable With one of the said elements and operatingas a trip to render the clutch mechanism inactive.

33. The combination of an indicator embodyin coperating elements capable of relative a j ustment, fastening means for/fastening the elements together for simultaneous movement and for unfastening them, and motion imparting means connected with one of the said elements for moving the indicator from its adjusted position, said motion imparting means embodying clutch mechanism, there being a projection' connected with one of the said elements adapted to be adjusted therewith and also moved with the indicator, said projection operating asatrlp `to render the clutch mechanism inactive at a predetermined point in the movement of the indicator.

In testimony whereof I have signed my name to this specification, in the presence of tvvo subscribing Witnesses, on thls 27th day of March, A. D. 1907.

ALLEN A. BOWSER.

Witnesses:

S. B. BEGHTEL, H. M; BowsER. 

